Re: How to "disable" register allocation?

[Vladimir Makarov <vmakarov at redhat dot com>]

Øyvind Harboe wrote:

> Is there an option(compile/build time?) to tell GCC to use as few
> registers as possible?
>
> Basically I want to run some tests where the assumption is that stack
> slots generate faster/smaller code than registers.
>
> Any pointers to where I should look in the GCC source, would be greatly
> appreciated.
>
>  
Just set all elements of reg_renumber array to -1 before the reload. 
Minimizing of register usage in reload would be more tricky.

Vlad